Alantolactone is a selective inhibitor of STAT3 that induces cancer-associated apoptosis and has antitumor activity.

Chromenone 1 is a potent potentiator of osteogenic bone morphogenetic protein (BMP). Chromenone 1 induces a pronounced, kinase-independent, negative TGFβ feedback that enhances nuclear BMP-Smad signaling outputs.

Monocrotaline (Crotaline) is a pyrrolizidine alkaloid extracted from the seeds of the Crotalaria plant. Monocrotaline has certain cellular activity against HepG2 cells and can induce pulmonary hypertension in rodents.

DMH-1 is a potent and selective Bone Morphogenetic Protein (BMP) inhibitor.

BMP signaling agonist sb4 (SB 4) is an agonist of benzoxazole bone morphogenetic protein (BMP) signaling (EC50 :74 nM)

LY-364947 (HTS466284) is a potent ATP-competitive inhibitor of TGFβR-I.

Pentabromophenol (NSC-5717) suppressed TGF-β response by accelerating the turnover rate of TGF-β receptors.

LDN-193189 2HCl (DM-3189 2HCl) is a selective BMP signaling inhibitor that inhibits ALK1,ALK2,ALK3 and ALK6, showing IC50s of 0.8 nM, 0.8 nM, 5.3 nM, and 16.7 nM, respectively, in kinase assays.LDN-193189 2HCl inhibited the transcriptional activity of BMP type I receptors in C2C12 cells, with IC50s of 5 nM and 30 nM, respectively. LDN-193189 2HCl inhibited the transcriptional activity of BMP type I receptors ALK2 and ALK3 in C2C12 cells, with IC50s of 5 nM and 30 nM, respectively, and was 200-fold more selective for BMP than for TGF-β.